CVE-2026-4082Disclosure

LOWCVSS 6.4 · MEDIUM

Exploit discussion active in current signal (1 latest mentions)

Immediate actions

  • Hunt for exploitation attempts and persistence artifacts
  • Increase monitoring for publicly documented tradecraft
  • Track advisory updates for patch or workaround availability

Recommended action window: High priority (within 72h)

NVD description

The ER Swiffy Insert plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the [swiffy] shortcode in all versions up to and including 1.0.0. This is due to insufficient input sanitization and output escaping on user-supplied shortcode attributes ('n', 'w', 'h'). These attributes are extracted using extract() and directly interpolated into the HTML output without any escaping such as esc_attr(). This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

1.5/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-79

Priority

LOW

Exploitation

NONE

PoC

YES

Patch

NONE

Momentum

STABLE

Threat summary

  • Public PoC is present in monitored signal
  • 3 mentions across 3 observed days
  • Momentum state: stable

What's happening

  • PoC mentioned or linked in 1 signal
  • Technical details provided in 2 signals
  • Disclosure: 2 classified signals
  • Peaked 2d ago at 1 mentions (2026-04-22); latest day: 1
  • 3 total mentions across 3 days

Deep dive

Activity timeline3 mentions / 3d
00111Mentions · 2026-04-22: 1Mentions · 2026-04-23: 1Mentions · 2026-04-25: 1PoC Mentioned / Linked · 2026-04-25: 1Technical Details · 2026-04-22: 1Technical Details · 2026-04-23: 104-2204-2304-25
Signal classification2 categories
Disclosure
266.7%
PoC
133.3%
Referenced assets4 URLs
Classification over time
DateTotalLabels
2026-04-221
Disclosure1
2026-04-231
Disclosure1
2026-04-251
PoC1
Full discourse3 posts
  • Atomic Edge@atomicedgeWAF
    PoC

    https://atomicedge.io/cve-proof/cve-2026-4082-er-swiffy-insert-version-1-0-0-medium-vulnerability-proof-of-concept CVE-2026-4082 #WordPress plugin #vulnerability er-swiffy-insert #cybersecurity #wordpressfirewall #wordpresssecurity #hacking #wpsecurity #atomicedge

    Post summary

    The post announces a Proof of Concept for CVE‑2026‑4082 with a link to the PoC page, but does not detail exploit code, active attacks, or a patch.

    0000057
    6 followersView on X
  • CVE@CVEnew
    Disclosure

    CVE-2026-4082 The ER Swiffy Insert plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the [swiffy] shortcode in all versions up to and including 1.0.0. This is due… https://www.cve.org/CVERecord?id=CVE-2026-4082

    Post summary

    The text announces that the ER Swiffy Insert WordPress plugin up to version 1.0.0 contains a stored XSS vulnerability via its shortcode, as documented in CVE-2026-4082.

    00000139
    57.2K followersView on X
  • Vulmon Vulnerability Feed@VulmonFeeds
    Disclosure

    CVE-2026-4082 Stored Cross-Site Scripting in ER Swiffy Insert Plugin for WordPress 1.0.... https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-4082 Vulnerability Notification: https://alerts.vulmon.com/?utm_source=twitter&utm_medium=social&utm_campaign=2102281&utm_content=3

    Post summary

    A notification of a stored XSS vulnerability in the ER Swiffy Insert Plugin for WordPress is provided, with links to vulnerability details and a vendor advisory.

    0000067
    4.0K followersView on X

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